ISP1561 データシートの表示（PDF） - Philips Electronics
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ISP1561 Datasheet PDF : 102 Pages
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Philips Semiconductors
ISP1561
USB PCI host controller
6.2 Pin description
Table 2: Pin description
Symbol[1]
Pin Type
SEL48M
1
I
SCL
SDA
PME#
2
O
3
I/O
4
O
VAUX
DGND
IRQ1
5
-
6
-
7
O
IRQ12
8
O
SEL2PORTS 9
I
VDD
A20OUT
KBIRQ1
MUIRQ12
DGND
SMI#
INTA#
VDD
RST#
10 -
11 O
12 I
13 I
14 -
15 O
16 O
17 -
18 I
CLK
GNT#
DGND
19 I
20 I
21 -
Description
selection between 12 MHz crystal and 48 MHz oscillator;
push-pull; TTL with hysteresis; 5 V tolerant
0 — 12 MHz crystal is used
1 — 48 MHz oscillator is used
I2C-bus clock (open-drain)[2]
I2C-bus data (open-drain)[2]
PCI Power Management Event; used by a device to
request a change in the device or system power state;
push-pull, open-drain; 10 ns slew rate control; CMOS; 5 V
tolerant
auxiliary voltage (3.3 V)
digital ground
system keyboard interrupt; push-pull, open-drain; 10 ns
slew rate control; CMOS; 5 V tolerant
system mouse interrupt; push-pull, open-drain; 10 ns slew
rate control; CMOS; 5 V tolerant
active downstream port selection; push-pull; TTL with
hysteresis; 5 V tolerant
0 — all the four ports are active
1 — only port 1 and port 2 are active; port 3 and port 4 are
inactive
supply voltage (3.3 V)
legacy gate 20 output; push-pull, open-drain; 10 ns slew
rate control; CMOS; 5 V tolerant
legacy keyboard interrupt input; push-pull; TTL with
hysteresis; 5 V tolerant[3]
legacy mouse interrupt input; push-pull; TTL with
hysteresis; 5 V tolerant[3]
digital ground
System Management Interrupt; push-pull, open-drain;
10 ns slew rate control; CMOS; 5 V tolerant
PCI interrupt; push-pull, open-drain; 10 ns slew rate
control; CMOS; 5 V tolerant
supply voltage (3.3 V)
PCI reset; used to bring PCI-specific registers, sequencers
and signals to a consistent state; push-pull; TTL with
hysteresis; 5 V tolerant
PCI system clock (33 MHz)
PCI grant; indicates to the agent that access to the bus has
been granted
digital ground
9397 750 10015
Product data
Rev. 01 — 06 February 2003
© Koninklijke Philips Electronics N.V. 2003. All rights reserved.
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